:root {
  --navy: #132A4C;
  --navy-dark: #0c1c34;
  --neon: #39FF9A;
  --neon-dim: #2bd681;
  --text-light: #f2f5fa;
  --text-muted: #9fb0c9;
  --text-dark: #1b2433;
  --max-width: 1080px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: 'Segoe UI', 'Inter', 'Helvetica Neue', Arial, sans-serif;
  color: var(--text-dark);
  background: #ffffff;
  line-height: 1.6;
}

h1, h2, h3 {
  font-family: 'Arial Black', 'Segoe UI', sans-serif;
  font-weight: 900;
  letter-spacing: -0.02em;
  margin: 0;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- HERO ---------- */

.hero {
  position: relative;
  background: linear-gradient(160deg, var(--navy) 0%, var(--navy-dark) 100%);
  color: var(--text-light);
  overflow: hidden;
  padding: 96px 0 88px;
  text-align: center;
}

.hero-glow {
  position: absolute;
  top: -120px;
  right: -120px;
  width: 420px;
  height: 420px;
  background: radial-gradient(circle, rgba(57, 255, 154, 0.25) 0%, rgba(57, 255, 154, 0) 70%);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  z-index: 1;
}

.logo {
  font-size: clamp(2.4rem, 8vw, 4rem);
  font-weight: 900;
  letter-spacing: -0.03em;
  color: var(--text-light);
  text-transform: uppercase;
}

.logo .accent {
  color: var(--neon);
}

.tagline {
  margin: 18px 0 40px;
  font-size: clamp(1.05rem, 2.5vw, 1.35rem);
  color: var(--text-muted);
  font-weight: 500;
}

.btn {
  display: inline-block;
  padding: 16px 36px;
  font-size: 1.05rem;
  font-weight: 700;
  text-decoration: none;
  border-radius: 999px;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.btn-primary {
  background: var(--neon);
  color: var(--navy-dark);
  box-shadow: 0 8px 24px rgba(57, 255, 154, 0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(57, 255, 154, 0.45);
  background: var(--neon-dim);
}

.btn-primary:active {
  transform: translateY(0);
}

/* ---------- SECTIONS ---------- */

.section {
  padding: 72px 0;
}

.section h2 {
  font-size: clamp(1.6rem, 4vw, 2.2rem);
  color: var(--navy);
  text-align: center;
  margin-bottom: 48px;
}

/* ---------- FEATURES ---------- */

.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.feature-card {
  background: #f6f8fb;
  border: 1px solid #e6ebf2;
  border-radius: 16px;
  padding: 28px 22px;
  text-align: center;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 24px rgba(19, 42, 76, 0.1);
}

.feature-icon {
  font-size: 2.2rem;
  margin-bottom: 14px;
}

.feature-card h3 {
  font-size: 1.05rem;
  color: var(--navy);
  margin-bottom: 10px;
}

.feature-card p {
  font-size: 0.92rem;
  color: #4a5568;
  margin: 0;
}

/* ---------- WHY ---------- */

.why {
  background: var(--navy);
  color: var(--text-light);
}

.why h2 {
  color: var(--text-light);
}

.why-inner {
  max-width: 720px;
}

.why p {
  font-size: 1.05rem;
  color: var(--text-muted);
  text-align: center;
}

/* ---------- DISCLAIMER ---------- */

.disclaimer {
  padding: 40px 0;
  background: #f6f8fb;
}

.disclaimer h3 {
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #7a889c;
  margin-bottom: 12px;
}

.disclaimer p {
  font-size: 0.82rem;
  color: #7a889c;
  max-width: 720px;
  margin: 0 auto;
}

/* ---------- FOOTER ---------- */

.footer {
  background: var(--navy-dark);
  color: var(--text-muted);
  padding: 28px 0;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.footer-inner p {
  margin: 0;
  font-size: 0.85rem;
}

.footer-link {
  color: var(--neon);
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 600;
}

.footer-link:hover {
  text-decoration: underline;
}

/* ---------- RESPONSIVE ---------- */

@media (max-width: 860px) {
  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 520px) {
  .hero {
    padding: 72px 0 64px;
  }

  .feature-grid {
    grid-template-columns: 1fr;
  }

  .section {
    padding: 56px 0;
  }

  .footer-inner {
    flex-direction: column;
    text-align: center;
  }
}